Finding the Fourth Proportional to 8,616,160,906.77, 12,897,733,603.86 and 5,621,776,349.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,616,160,906.77 : 12,897,733,603.86 = 5,621,776,349.09 : x
2. Step 2: Convert to fraction form
   8,616,160,906.77/12,897,733,603.86 = 5,621,776,349.09/x
3. Step 3: Cross multiply
   8,616,160,906.77x = 12,897,733,603.86 × 5,621,776,349.09
4. Step 4: Simplify right side
   8,616,160,906.77x = 72,508,173,730,978,996,224
5. Step 5: Solve for x
   x = 72,508,173,730,978,996,224/8,616,160,906.77
6. Step 6: Final answer
   x = 8,415,369,039.12